Update scalacheck-1-15 to 3.2.6.0 (#973)
Update scalacheck-1-15 to 3.2.6.0 (#973)

Co-authored-by: Rui Gonçalves <4fc2f2aa16356fef9281b16aaf3345971cf147f1@gmail.com>
pureconfig/pureconfig,melrief/pureconfig